- 10 pieces of 2x4 lumber
- Four package of 4 1/2’ screws
- Carpenters glue
- Two steel bar (1 meter and 50 cm) (Used for Axel and weight holder)
- 50” of string (used for the sling and holding the counter weights)
- Weights (20 pounds of counter weight)
- Duct tape (used for making the sling in the desired shape)
- Drill (to drill all the necessary pieces together)
- Table Saw
- Hand Saw
- Angular Saw
- Tennis ball
- Can of Paint (to paint the arm)
- Stop watch (to record time)
- Sand paper
- Pencils (to record precise cuts)
- Paper (to record results)
Trebuchet Info